摘要
利用 5kWCO2 激光器在 5Cr2 1Mn9Ni4N不锈钢基体表面成功熔覆了含不同CeO2 量的镍基金属陶瓷复合层。研究了稀土氧化物CeO2 对激光熔覆金属陶瓷复合层显微组织形态和耐腐蚀性能的影响 ,发现稀土氧化物CeO2 能加速碳化钨颗粒的溶解 ,促使钨与铬形成金属间化合物 ;激光熔覆镍基金属陶瓷复合层的耐硫酸腐蚀能力显著优于 1Cr18Ni9Ti不锈钢 ;且含 0 5 %CeO2 (质量分数 )的激光熔覆层的耐腐蚀能力比含 1 5 %CeO2 (质量分数 )和不含CeO2
The Ni based metal ceramic coatings on the surface of 5Cr21Mn9Ni4N stainless steel were clad by a 5kW CO 2 laser.The effects of CeO 2 on structure and corrosion resistance of laser clad Ni based metal ceramic coatings were investigated.The studies revealed that CeO 2 could accelerate the dissolution of tungsten carbide particles and made the formation of Cr W intermetallic compound.Compared with steel 1Cr18Ni9Ti,the corrosion resistance of the laser clad Ni based metal ceramic coatings was raised remarkably and the corrosion resistance of the coatings with 0 5wt% CeO 2 was better than that of the coatings with 1 5wt% CeO 2 and without CeO 2.
出处
《金属热处理》
CAS
CSCD
北大核心
2001年第2期1-3,共3页
Heat Treatment of Metals
